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| author | Chengming Zhou <zhouchengming@bytedance.com> | 2024-02-04 03:06:01 +0000 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-22 10:24:54 -0800 |
| commit | b49547ade38a63ff39c9fbc53fb38622cb63854a (patch) | |
| tree | dda6b34e05378084c6d75a45245d48b21ad8fc50 /mm/list_lru.c | |
| parent | 0827a1fb143fae588cb6f5b9a97c405d6c2ddec9 (diff) | |
| download | linux-b49547ade38a63ff39c9fbc53fb38622cb63854a.tar.gz linux-b49547ade38a63ff39c9fbc53fb38622cb63854a.tar.bz2 linux-b49547ade38a63ff39c9fbc53fb38622cb63854a.zip | |
mm/zswap: stop lru list shrinking when encounter warm region
When the shrinker encounter an existing folio in swap cache, it means we
are shrinking into the warmer region. We should terminate shrinking if
we're in the dynamic shrinker context.
This patch add LRU_STOP to support this, to avoid overshrinking.
Link: https://lkml.kernel.org/r/20240201-b4-zswap-invalidate-entry-v2-3-99d4084260a0@bytedance.com
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Reviewed-by: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/list_lru.c')
| -rw-r--r-- | mm/list_lru.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/list_lru.c b/mm/list_lru.c index 61f3b6b1134f..3fd64736bc45 100644 --- a/mm/list_lru.c +++ b/mm/list_lru.c @@ -243,6 +243,9 @@ restart: */ assert_spin_locked(&nlru->lock); goto restart; + case LRU_STOP: + assert_spin_locked(&nlru->lock); + goto out; default: BUG(); } |